Article
Chemistry, Physical
Caterina Sanna, Wenjing Zhang, Paola Costamagna, Peter Holtappels
Summary: The study reports the synthesis and electrochemical characterization of composite cathodes made from a mixture of LSCF and GDC nanofibers. The electrodes showed low polarization resistance at 650 degrees C, indicating promising potential for practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Ruiyun Huang, Connor G. Carr, Chirranjeevi Balaji Gopal, Sossina M. Haile
Summary: In this study, a general electrochemical method for determining nonstoichiometry in thin film MIECs was demonstrated via measurement of the chemical capacitance. Impedance spectra measurements were conducted on ceria and ceria-zirconia materials under different oxygen partial pressures and temperatures. The results showed that nonstoichiometry values can be accurately determined from the chemical capacitance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Mohammad Abareshi, Erfan Sadeghi, Mohsen Hamzeh, Mehrdad Saif, Seyed Mohammad Mahdi Alavi
Summary: This paper proposes a multi-purpose controllable electrochemical impedance spectroscopy (MP-cEIS) device for battery monitoring and testing during charge and discharge processes. The device is based on a synchronous buck converter with a low-cost input filter and includes a closed-loop feedback system for controlling the injection of the EIS excitation signal. The design of a robust controller using H-infinity and quantitative feedback theory (QFT) methods is also presented.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Kazuhiro Hikima, Ho Jia Ler, Radian Febi Indrawan, Hiroyuki Muto, Atsunori Matsuda
Summary: In this study, Li7P2S8I solid electrolytes doped with Li4SiO4 were synthesized using mechanical milling and liquid-phase shaking methods. The doped electrolyte samples exhibited high ionic conductivity and stability at 25 degrees Celsius.
Article
Chemistry, Physical
Julian Zahnow, Tim Bernges, Amalia Wagner, Nicole Bohn, Joachim R. Binder, Wolfgang G. Zeier, Matthias T. Elm, Jurgen Janek
Summary: The study found that variations in porosity and grain size of cathode material LiNi1/3Co1/3Mn1/3O2 significantly affect the electronic and ionic conductivities, with an increase in activation energy observed. Rietveld refinement of X-ray diffraction patterns revealed correlations between activation energies and unit cell volume, while a Meyer-Neldel behavior was observed for defect formation enthalpies. These results emphasize the importance of considering microstructure and transport characteristics in the careful design of active materials for lithium ion batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Linhao Li, Teresa Roncal-Herrero, John Harrington, Steven J. Milne, Andy P. Brown, Julian S. Dean, Derek C. Sinclair
Summary: The study investigated the influence of adding a small amount of Bi2O3 on grain boundaries in high temperature dielectric solid solution series, leading to significant changes in conductivity and ion switch behavior. At low temperatures, grain boundaries act as electrically blocking layers, while they become highly conductive at higher temperatures due to a phase transition and melting of δ-Bi2O3.
Article
Chemistry, Physical
Siavash M. Alizadeh, Hamed Mohebbi, Mohammad Golmohammad, Omid Sharifi, Farshid Farzaneh
Summary: The high sintering temperature is a major challenge in preparing a dense and ionic conductive yttria-stabilized zirconia (YSZ) solid electrolyte. Iron has been investigated as an efficient additive for YSZ to reduce its sintering temperature while minimizing the detrimental effect on ionic conductivity. This study explores the effects of iron on the physical, microstructural, and electrical properties of YSZ. The results demonstrate that iron does not affect the stability of the cubic phase structure, but its presence affects the oxygen vacancy concentrations and grain boundary conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
Sudarshan Narayanan, Ulderico Ulissi, Joshua S. Gibson, Yvonne A. Chart, Robert S. Weatherup, Mauro Pasta
Summary: The interface between the Li metal electrode and inorganic solid electrolyte is crucial for the development of reliable all-solid-state Li batteries. This study shows that the Li plating current density has a distinct impact on the chemistry and morphology of interphase components formed at the interface. Understanding the evolution of the solid electrolyte interphase (SEI) is important for improving the performance of all-solid-state lithium batteries.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Parinaz Abiri, Yuan Luo, Zi-Yu Huang, Qingyu Cui, Sandra Duarte-Vogel, Mehrdad Roustaei, Chih-Chiang Chang, Xiao Xiao, Rene Packard, Susana Cavallero, Ramin Ebrahimi, Peyman Benharash, Jun Chen, Yu-Chong Tai, Tzung K. Hsiai
Summary: This study demonstrates the capability of 3-D EIS-derived electrical impedance tomography (EIT) to map metabolically active plaques in arterial walls. By using microelectrode arrays on a balloon catheter, the researchers were able to accurately predict the location and progression of oxLDL-laden arterial walls. This has potential implications for predicting the risk of acute coronary syndromes or stroke.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Multidisciplinary
Ling Gao, YuLin Xie, Yan Tong, Miao Xu, JiaLe You, HuiPing Wei, XiangXiang Yu, SiQi Xu, Yi Zhang, Yong Che, Ya Tang, Kota Suzuki, Ryoji Kanno, GuoWei Zhao
Summary: Al-doped 651I can reduce activation energy and increase ionic conductivity, leading to enhanced performance in all-solid-state batteries. The Al-doped samples showed smaller lattice parameters and higher ionic conductivity compared to non-doped samples, with the highest ionic conductivity reaching 2.6x10(-5) S cm(-1).
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Chemistry, Physical
K. A. Niradha Sachinthani, Jenny R. Panchuk, Yuhang Wang, Tong Zhu, Edward H. Sargent, Dwight S. Seferos
Summary: Polymeric mixed ionic/electronic conductors (MIECs) with controlled structure and mechanically robust properties were prepared and investigated. Copolymers containing thiophene and selenophene repeat units showed significantly higher Li-ion conductivity and electronic conductivity compared to homopolymer counterparts, indicating potential for designing new MIECs.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Materials Science, Ceramics
Xiaojuan Lu, Mingyang Duan, Jing Li
Summary: Solid-state lithium-ion conductors have high grain-boundary resistance, but this study successfully reduced the resistance and improved the conductivity of LLTO by using bacterial cellulose as a template.
CERAMICS INTERNATIONAL
(2023)
Article
Electrochemistry
Chong Lei, Michael F. Simpson, Anil V. Virkar
Summary: This study conducted asymmetric experiments using two probes to test the cathode and anode electrode processes in SOFCs, with results indicating good agreement between EIS and DC measurements and showing that the two electrodes need not be identical.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Review
Chemistry, Physical
Nur Nadhihah Mohd Tahir, Nurul Akidah Baharuddin, Abdullah Abdul Samat, Nafisah Osman, Mahendra Rao Somalu
Summary: Solid oxide fuel cells (SOFCs) are known for their high efficiency and energy density, but are limited by their high operating temperatures. Different types of cathode materials, such as MIEC and THOEC, are leading in research and application, but further studies are needed for continuous improvement.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Daiwei Wang, Li-Ji Jhang, Rong Kou, Meng Liao, Shiyao Zheng, Heng Jiang, Pei Shi, Guo-Xing Li, Kui Meng, Donghai Wang
Summary: This paper proposes a low-density inorganic solid-state electrolyte to improve the sulfur utilization and performance of solid-state lithium-sulfur batteries.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Namrata I. Jain, Shyamsunder S. Bhoga
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2015)
Article
Chemistry, Physical
A. P. Khandale, M. G. Bansod, S. S. Bhoga
SOLID STATE IONICS
(2015)
Correction
Chemistry, Physical
Namrata Jain, Shyamsunder S. Bhoga, Gowardhan S. Khadekar
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
(2015)
Article
Chemistry, Physical
M. Bansod, A. P. Khandale, S. S. Bhoga
Article
Chemistry, Physical
V. N. Chaudhari, A. P. Khandale, S. S. Bhoga
Article
Chemistry, Physical
M. B. Bansod, A. P. Khandale, R. V. Kumar, S. S. Bhoga
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Physical
S. S. Bhoga, A. P. Khandale, B. S. Pahune
SOLID STATE IONICS
(2014)
Article
Chemistry, Physical
A. P. Khandale, S. S. Bhoga
SOLID STATE IONICS
(2014)
Article
Chemistry, Physical
A. P. Khandale, B. S. Pahune, S. S. Bhoga, R. V. Kumar, R. Tomov
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
A. P. Khandale, S. S. Bhoga
Summary: The dispersion of nanocrystalline Ce0.9Gd0.1O2-delta in superfine Sm1.5Sr0.5NiO4+delta is achieved using a modified precipitation technique, inhibiting grain growth and providing morphological stability. The concentration-dependent behaviors of ionic conductivity, surface exchange rate, and electrode polarization resistance are comprehended using a percolation model. Improvement in electrochemical performance is correlated to the nano crystallite size of Ce0.9Gd0.1O2-delta.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Green & Sustainable Science & Technology
R. Vinoth Kumar, A. P. Khandale
Summary: This review focuses on the potential cobalt-based cathodes for low-temperature solid oxide fuel cells (LT-SOFC). The combination of novel elements and new materials in the architecture of LT-SOFC can increase its efficiency. Decoration of metal nanoparticles or thin films on cathodes can enhance their performance and stability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)